Despite the many policies in place, the great depression was not brought to an end until

The rise of advertising in the 1920s. i am good with seeing how advertisements shape the roaring twenties and how it developed a new way of life through modern days. but i am not sure what the details of advertising in the 1920s were. if possible can you send me links (preferrably credential links) to sources that maybe show like the first company to start advertising through the radio, how advertising benefits (statistics graphs), etc.

What is the scientific revolution? what techniques did the scientist use

Fascism is a political ideology that became popular in certain countries following world war i and was a response to fear of a. colonialism. b. communism. c. militarism. d. nationalism.